11011923 has 32 divisors (see below), whose sum is σ = 17774400. Its totient is φ = 6697728.

The previous prime is 11011921. The next prime is 11011933. The reversal of 11011923 is 32911011.

It is not a de Polignac number, because 11011923 - 2¹ = 11011921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011896 and 11011905.

It is not an unprimeable number, because it can be changed into a prime (11011921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47973 + ... + 48201.

It is an arithmetic number, because the mean of its divisors is an integer number (555450).

Almost surely, 2^11011923 is an apocalyptic number.

11011923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11011923 is a deficient number, since it is larger than the sum of its proper divisors (6762477).

11011923 is a wasteful number, since it uses less digits than its factorization.

11011923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11011923 is about 3318.4217634291. The cubic root of 11011923 is about 222.4783331172.

Adding to 11011923 its reverse (32911011), we get a palindrome (43922934).

The spelling of 11011923 in words is "eleven million, eleven thousand, nine hundred twenty-three".